What are you trying to achieve?

Mastodon and Kbin are quite different platforms and you can have as many accounts on as many instances of each as you wish (and the admins thereof offer). What you do with each is up to you.

There’s no migration path from mastodon to Kbin or Lemmy at this time

The closest thing to an account migration would be to create a kbin account and follow your previous mastodon follows. You should then be able to see their content in the Microblog tab.

The Magazines tab isn’t present on Mastodon and there is no similar function there.